Hello everybody :-)
I'm currently driving my SF2400AC+ with zenSDK, a shelly and some scripts and it works fine. However, I have some doubt about the do and don't to operate the machine safely on the long run. Is there any guidelines anywhere ?
eg :
- how often can I poll it : for read ? for write ? MQTT updates every ~ 4s
- is it safe to change immediately from charge to discharge or shall we to go standby in between ?
- I notice two kind of standby : a "cold" one if we request 0W and a "hot" one if we request anything between 1 and 29W. We can tell the difference by the temperature of the inverter and the sound of the relay. from hot standby we can switch to actual charge or discharge almost immediately, cold standby requires ~ 10-15s to execute the request. How long can we safely keep the device in hot standby ? How often can we switch from cold standby to actual charge/discharge ?
- what is a safe output/input power which does not stress the batteries too much ?
- from time to time, I can see the battery charging on its own, without any request. This happens in two situations : once in a while to calibrate the soc, or if the battery hasn't been charged for a while (no sun) and the soc has dropped at 5% and stayed there for a couple of hours. I'd like to make sure this self charge does'nt occur during the electricity peak prices but found no provision to do so in the zensdk. Am I missing something ?
Thanks for any hints !